PPT-Automatic Voltage Regulator

Presented By Rajarshi Ghose Dastidar Roll no 149 Why do we need them It is known that VoltageV of a power supply system must be maintained at a constant value Other wise the performance of any motormachinery will drop considerably. The regulator features an active low delayed reset output flag which can be used to reset a microprocessor system on turnON and in the event that the regulator output falls out of regulation for any reason An external capacitor programs a delay time 4.4 Constant On Time (COT) Buck Regulators. Constant ON-Time (COT) Hysteretic Regulator. Advantages. Constant . frequency vs. V. IN. High Efficiency . at light load. Fast transient . response. Disadvantages. Lin . Zhong. ELEC518, Spring 2011. Outline. Battery technologies. Battery properties. Fuel cell batteries. Smart battery interface. Power distribution. 2. 3. Brief history of batteries. Battery density increases about 10% annually. Krishna . Kishore. Reddy K. 2010H223084H. Power Supply System for a Laptop. CMOS linear regulators can be categorized as low supply current, large current, high voltage, high-speed, LDO, and so on.. Derek Clark (PSE). Josh Jordan (PSE). Ken Figueiredo (CpE). To have a secure channel to transfer data. Rugged and reliable.. Send data over land that you don’t own.. Immune to Electromagnetic interference.. 4.4 Constant On Time (COT) Buck Regulators. Constant ON-Time (COT) Hysteretic Regulator. Advantages. Constant . frequency vs. V. IN. High Efficiency . at light load. Fast transient . response. Disadvantages. P. ulsed loads. Part - 2. Presented by: Sanjay Pithadia. SEM – Industrial Systems, Medical Sector. Challenge to Solve . Floating the regulators to support high voltages. 2. Need of Floating Regulators. Zener. Diode Regulators. Series Transistor Regulators. Low Dropout (LDO) Regulators. Packaged Regulators. Headroom and Dropout Voltage. Headroom. The difference in voltage between the input voltage and the output voltage of the regulator.. 2. .1 Types . of Linear Regulators. What is a Linear Voltage Regulator. A linear regulator operates by using a voltage-controlled current source to force a fixed voltage to appear at the regulator output terminal. The control circuitry continuously monitors (senses) the output voltage, and adjusts the current source (as required by the load) to hold the output voltage at the desired value.. P. ulsed loads. Part - 3. Presented by: Sanjay Pithadia. SEM – Industrial Systems, Medical Sector. Challenge to Solve. Scaling Voltage and Current using standard voltage regulators and MOSFETs. 2. Voltage Scaling – to support Higher Input Voltage. 2.4 NMOS. Linear-Regulator Operation. Voltage feedback samples the output. . R1 and R2 may be internal or external. Feedback controls pass transistor’s current to the load. 2. V. IN. V. REF. C. IN. ZENER DIODE. Dr. Femi . Onibonoje. With . Signal Diode. , the “reverse biased” diode blocks current in the reverse direction, but will suffer from premature breakdown or damage if the reverse voltage applied across it is too high. Team 1: Grant Trudel. Regulators. Definition. Purpose. How they work. Types. Questions. 1/24/2015. Regulators. 2. Regulators - Definition. As its name implies, a regulator is meant to regulate something: provide a constant flow. 7805.. 7805 is a 5V fixed three terminal positive voltage regulator IC. . The IC has features such as safe operating area protection, thermal shut down, internal current limiting which makes the IC very rugged. Output currents up to 1A can be drawn from the IC provided that there is a proper heat sink. .